Accueil | Fils de syndication

Scientific American - Objets Actus

Evidence-based medicine in Russia: the challenge and the hope [Sciam Observations Blog]
Lundi 16 Juin 2008 - 09:19 - 5 mois, 2 semaines depuis - Presse spécialisée - Scientific American
[Editor's note: Merrill Goozner has spent the last two weeks reporting on the state of Russian health care. [More]

Improving Health by Targeting Gut Bacteria: A Q&A with Jeremy Nicholson [Features]
Dimanche 15 Juin 2008 - 22:01 - 5 mois, 2 semaines depuis - Presse spécialisée - Scientific American
This story is a supplement to the feature "Jeremy Nicholson's Gut Instincts: Researching Intestinal Bacteria" which was printed in the July 2008 issue of Scientific American.One of the hottest biomedical fields right now is metabolomics--the study of the metabolites and other chemicals that the body and its bacteria produce. The goal is to find out how the compounds can serve as indicators of health and disease. For the Insights story, "Going with His Gut Bacteria," in the July 2008 Scientific American, Melinda Wenner talked with Jeremy Nicholson of Imperial College London. One of the founders of the field, Nicholson thinks that metabolomics may prove that the best medicine actually targets intestinal flora rather than cells of the body. Here is an edited excerpt from the interview. [More]

News Scan Briefs: Eating with Tension, Cancer Marriage, Milk and Diabetes [Scientific American Magazine]
Dimanche 15 Juin 2008 - 22:00 - 5 mois, 2 semaines depuis - Presse spécialisée - Scientific American
Eating with TensionThe long, thin beaks of shorebirds called phalaropes are no good at sucking up water and any tasty crustaceans within. Instead they rely on the attractive force of liquid known as surface tension to ferry prey upward. The birds first swim in small, fast circles on the surface of the water, creating a vortex that pulls creatures up within their reach. They next peck at the water and then rapidly open and close their beaks. This scissoring motion both pulls and squeezes droplets, about two millimeters in size, and moves them from the tip of their beaks into their mouths. In experiments with mechanical beaks, scientists at the Massachusetts Institute of Technology and the French National Center for Scientific Research find that the droplets do not move well if the water contains oil, detergents and other pollutants that alter water’s surface tension. Draw in the findings from the May 16 Science. [More]

Body Clock Doubles As Dinner Bell [60-Second Science]
Jeudi 22 Mai 2008 - 22:10 - 6 mois, 1 semaine depuis - Presse spécialisée - Scientific American
[The following is an exact transcript of this podcast.]I had a roommate who couldn’t sleep unless it was pitch dark, so she wore a face mask to bed. But she’d gotten it from an airline, so one of the eye patches had a little sticker on it that said, “Wake me for meals.” Now a new study from Harvard Medical school suggests that she needn’t have bothered with the sticker. Because scientists there have found that the brain has a special “meal clock” that keeps animals from snoozing when there’s food to be had. The results appear in the May 23 issue of Science. [More]

Genetic Nondiscrimination Act Becomes Law [News]
Jeudi 22 Mai 2008 - 15:00 - 6 mois, 1 semaine depuis - Presse spécialisée - Scientific American
President Bush yesterday signed legislation into law that will bar health insurance companies or employers from denying or canceling coverage, hiking premiums or making decisions on hiring, firing and compensation based on genetic test results. [More]

Failure to Kick Smoking Habit May Put a Drag on Social Life [News]
Jeudi 22 Mai 2008 - 13:00 - 6 mois, 1 semaine depuis - Presse spécialisée - Scientific American
Smokers who fail to kick the habit are not only hurting their bodies but may also be missing a chance to make new friends or, in some cases, keep old ones, according to new research. [More]

Blogging--It's Good for You [Scientific American Magazine]
Jeudi 22 Mai 2008 - 06:25 - 6 mois, 1 semaine depuis - Presse spécialisée - Scientific American
Self-medication may be the reason the blogosphere has taken off. Scientists (and writers) have long known about the therapeutic benefits of writing about personal experiences, thoughts and feelings. But besides serving as a stress-coping mechanism, expressive writing produces many physiological benefits. Research shows that it improves memory and sleep, boosts immune cell activity and reduces viral load in AIDS patients, and even speeds healing after surgery. A study in the February issue of the Oncologist reports that cancer patients who engaged in expressive writing just before treatment felt markedly better, mentally and physically, as compared with patients who did not.Scientists now hope to explore the neurological underpinnings at play, especially considering the explosion of blogs. According to Alice Flaherty, a neuroscientist at Harvard University and Massachusetts General Hospital, the placebo theory of suffering is one window through which to view blogging. As social creatures, humans have a range of pain-related behaviors, such as complaining, which acts as a “placebo for getting satisfied,” Flaherty says. Blogging about stressful experiences might work similarly. [More]

Mind Reviews Books, Movies and More [Scientific American Mind]
Mercredi 21 Mai 2008 - 22:00 - 6 mois, 1 semaine depuis - Presse spécialisée - Scientific American
Your Brain on Cubs: Inside the Heads of Players and FansEdited by Dan Gordon. Dana Press, 2008 [More]

Recruiting a Dangerous Foe to Fight Cancer and HIV [Features]
Mercredi 21 Mai 2008 - 12:00 - 6 mois, 2 semaines depuis - Presse spécialisée - Scientific American
If you are pregnant or know anyone who is pregnant, you have almost certainly heard of Listeria, a dangerous bacterium that contaminates vegetables, dairy and meat. It is something you want to avoid: Listeria infections kill about 500 people a year in the U.S., and 2,000 more become seriously ill with food poisoning. Pregnant women are about 20 times more likely to become infected. [More]

The Search for a Universal Flu Vaccine: A Q&A with Walter Fiers [Features]
Mardi 20 Mai 2008 - 15:00 - 6 mois, 2 semaines depuis - Presse spécialisée - Scientific American
One of the greatest public health fears is an influenza pandemic. Epidemiologists have worried that the avian flu virus, formally known as H5N1, could mutate enough to sicken and pass among humans, who would not have an immunity to it. A universal flu vaccine would prevent such a threat: like some childhood shots, it would confer lifelong protection--and eliminate seasonal flu injections as well. For the Insights story, "Beating the Flu in a Single Shot,"appearing in the June 2008 Scientific American, Alexander Hellemans talked with Walter Fiers of Ghent University in Belgium. Fiers discovered a key protein on the influenza virus that could serve as a target for a universal vaccine; the drug has shown promise in an early clinical trial. Here is an edited excerpt of the interview, translated from Dutch.Before you started working on the influenza virus, you were actually decoding genomes in the 1960s. Did this then-new technique help you in tackling the influenza virus? [More]

Actus fournies par : Scientific American

Ce site internet met des informations à votre disposition seulement et uniquement dans un but pédagogique. Elles ne peuvent en aucun cas remplacer la consultation d'un médecin ou les soins prodigués par un praticien qualifié et ne doivent par conséquent jamais être interprétés comme pouvant le faire.
Copyright © imedecin
Rental::Voyage::Annuaire web
Médecine et nouvelles technologies::Vidéos médecine::Forum santé

Accueil | Fils de syndication

imedecin.fr

Imedecin.com

Sites imedecin